Water Tube Boiler Working Principle Pdf Download PATCHED
Water Tube Boiler is the type of boiler in which the water is flowing inside the tube and hot gases which are produced by the combustion chamber have surrounded the tube and the further boiler is used for the generation of electricity.
Water Tube Boiler Working Principle Pdf Download
This boiler works above the critical pressure which are 225 bar and can work up to 350 bar pressure and the water which is entered into the system is directly converted into steam because of Latent Heat. The efficiency of the Benson boiler is good.
It is an internally fired furnace boiler. The Lamont Boiler is also a water boiler and working pressure is above 150 bar. So as you can see it works above 150 bar, therefore the production of steam is high 5000 kg per hour.
The Lamont boiler design is flexible. In Lamont Boiler the circulating pump is used to circulate the water into the furnace. The main advantage of this boiler is that it is very easy to start (No problem with the starting).
It is the extent of Lamont Boiler. The Loeffler boiler is also a water tube and the working pressure is around 100 bar which is high pressure. Normally you can not see a fire tube boiler works under this pressure.
The main application of the water-tube boiler is that it is being used at several places Such as paper mill, Sugar mill, a textile factory, Central heating enterprise, Chemical industry, A power plant, and so on.
You can also read the Fire-tube boiler in detail I have written that article too. If you have any doubts regarding this article feel free to contact us. And if you like the article please do not forget to share it on social.
Steam is one of the great sources of energy for our modern age. We have used steam from the very beginning of our first industrial revolution in human history. It provides heat for process heating, sterilization, and many other applications that are increasingly important to industrial facilities, among others. A boiler or steam generator is a device used to create steam by applying heat energy to water. Different types of boilers are available in several sizes and forms and find their use in various applications. The water tube boiler is one of them that is applied widely in industries.
A high-pressure water tube boiler (also called a water tube) pumps water through tubes heated by the fire from the outside. Inside the furnace, fuel is burnt to produce hot gas, which boils water in the steam-generating tubes. The Water Tube Boiler is a vital component of many industrial systems. Water Tube Boilers are available from a variety of Suppliers And Companies, as well as various manufacturers and distributors, and there are several Water Tube Boilers For Sale on Linquip.
There is a comprehensive range of water tube boiler services on the Linquip platform that meets all of your needs. Linquip can connect you with a number of industrial water tube boiler service companies and experts who can help you. Linquip offers a team of Water Tube Boiler specialists who can assist you test your boiler.
The water tube boiler represents one of the several pressurized equipment options used to convert water into steam under controlled conditions. A way to rapidly produce steam is to feed the water under pressure into a tube or tubes surrounded by the combustion gases. The earliest example of this was developed by Goldsworthy Gurney in the late 1820s for use in steam road carriages. Modern high capacity boilers are of water tube type. Basically, in this boiler, water will be flown inside the tubes surrounded by flue gases. More steam is generated by using this boiler, so the overall efficiency of the boiler is high. The ability of water tube boilers to be designed without the use of excessively large and thick-walled pressure vessels makes these boilers particularly attractive in applications that require:
The water tube boiler is common in papermaking, sugar, and other Industries that demand electrical power and steam. Owing to their superb working properties, the use of water tube boilers is highly preferred in the following major areas:
Longitudinal Drum Boiler or Horizontal Tubes Boiler are other names for the Babcock-Wilcox boiler. One cylindrical drum is longitudinally positioned above the heating chamber in this sort of boiler. The downcomer tube in the back of the drum is filled, and the riser tube in front of the drum is installed.
A firetube boiler produces steam by passing combustion gas through a series of tubes surrounded by water in a vessel, whereas a water tube boiler transfers heat energy and produces steam by sending water through a series of tubes surrounded by combustion gas.
The Feed Water is allowed inside the steam drum by a feed check valve. The water travels to the mud drum where any unwanted particles will settle at the bottom of the mud drum. The water circulation is maintained by circulating tubes and steam pressure is maintained by equalizing tubes. The fuel that is burnt in the firebox over the grate produces hot flue gases that travel over the water tubes giving its temperature. For the proper passage of hot flue gases over the water tubes baffle plates are arranged. The heated water generates high-pressure steam used for the production of Electricity. To increase the economy of the boiler, exhaust gases also find use to preheat combustion air blown into the burners and to warm the feed water supply in an economizer.
So, there you have a useful guide to the water tube boiler. If you have any points to discuss in this article in Linquip, let us know by leaving a reply in the comment section. Is there any question we can help you through? Feel free to sign up on our website to get the most professional advice from our experts.
Babcock And Wilcox Boiler is a stationary water tube boiler. It consists of the steam-water drum. a short tube connects the steam water drum with the uptake header and down header as shown in the figure. A mud box is equipped with each down space header and the mud collected, is removed.There is a slow-moving chain on which coal is fed from the hopper. The firebricks baffle wall deflected the hot gases and help the hot gases to leave the chimney. The dampers are used to regulate the draught and are operated by a chain and a pulley.
Following are the important parts of Babcock and Wilcox Boiler.Water drumDown take headerUptake headerWater tubesBaffle platesFire doorGrateMud boxFeed check valveFurnaceDampersRead also: Steam Boilers: Parts, Types, Classification, Advantages, Application, and More1. Water DrumIt is a horizontal axis drum containing water and steam. It is connected by a short tube with an uptake header or riser at the back end.2. Downtake HeaderThis is present at the rear end of the boiler and joins the water tubes to the rear end of the drum. It collects the water from the drum.3. Uptake HeaderIt is present at the front end of the boiler and is attached to the front end of the drum. It transmits the steam from water tubes to the drum.4. Water TubesThese are the tubes in which water passes and changes into steam. The water tubes (10 cm diameter) are inclined to the horizontal and connect the uptake header to the down take header. Due to its inclination, the water tubes are not completely filled with water, and water and steam are easily separated.5. Baffle PlatesThe Baffle plates are present within the water tubes. It causes hot gases to move upwards and downwards and again upwards before leaving the chimney. Baffle plates are provided to deflect hot flue gases.6. Fire DoorIt is applied to burn solid fuel in the furnace.7. GrateIt is a platform, in which the solid fuel (coal) is burnt.8. Mud BoxA mud box is provided with each down take header and the mud, that is settled down is removed.9. Feed Check ValveIt is employed to fill water in the drum.10. FurnaceThe furnace is placed under the uptake header. In which the fuel is actually burnt.
Water tube boilers were developed for a variety of reasons, including the need for higher steam pressures, higher steam generation rate, superheated steam. these types of boilers have quicker response to load changes. We briefly discuss about Water tube boiler parts and functions.
In the water tube boiler, the water and steam flow inside the tubes and the hot gases flow over the outside surfaces. Where as in fire tube boilers hot gases from combustion travels through the tubes. flue gases produced from furnace where fuel is burnt.
In a typical Water tube boiler design as shown in the figure, it consists of two drums the steam drum and the water or mud drum. On this design straight tubes were rolled into mud drum, and the front headers were connected to the steam drum. The rear header was connected to a horizontal box header, which was also attached to the steam drum. The tubes were inclined to promote water circulation. There was also a spring loaded safety valve on top of the steam drum. In a water tube boiler fuel is fired into a water cooled furnace. Sheet metal and refractory enclosing the boiler called casing. At the end of the furnace, the flue gas turns into the convection section and travels towards the stack.
All boilers have a radiant and a conviction sections, tubes around the furnace are called generation or riser tubes about a half of steam is generated in this area rest of the steam is produced in the convection section. Water inside the tubes become hot and due to natural circulation steam is collected and separated in the steam drum. Pre heated (economiser) Feed water is continually feed in the steam drum with feed water pump.
These boilers were common in the paper making, sugar and other Industries which had big demands for electrical power and steam. Steam generated at high pressure and superheated would be fed to a turbine driving an alternator to generate electricity. Low-pressure steam leaving the turbine would then be used for the process.The smaller water tube boilers can be built at the manufacturers and delivered to site as one unit package water tube boiler. Most boilers, however, are built in sections and erected on the site.